ruben ramirez reports. >> reporter: across the country, drivers are feeling the spike in gas prices. >> gas prices went up 11 cents in one day. >> it jumps almost every two days, it seems like. >> reporter: according to www.gasbuddy.com, a gallon of regular gas is up 45 cents over the past month to $3.71 a gallon. experts point to a trio of reasons: refineries are not producing at full capacity as they dump the winter fuel from their tanks and refill them with summer blend gasoline; some refineries are closed for maintenance, which is typical this time of year; and, as we began the year, supplies of gasoline were lower. >> there was a lot of concern going on with fiscal cliff and the sequestration and everything like that, so it really kind of put a lot of people on the sidelines, including the oil refiners. so, everybody was kind of in a wait-and-see mode, and now we got through all that pretty unscathed, and now we're getting into some increased demand. >> reporter: but the big fear with rising gas prices: money in people's pocketbooks will go to filling the tank and not their shop